#include <stdio.h>

void change_value(int *numa,int *numb)
{
	*numa = 10;
	*numb = 20;
}



int main()
{
	int a=0;
	int b=0;
	printf("a=%d b=%d\n",a,b);
	printf("======================\n");
	change_value(&a,&b);
	printf("a=%d b=%d\n",a,b);
	return 0;
}
